Question28:-A correlation coefficient of 1 means that
A:-For every positive increase in one variable, there is a positive increase in a fixed proportion of the other variable
B:-For every positive increase in one variable, there is a negative decrease in a fixed proportion of the other variable
C:-For every positive increase in one variable, there is no change in a fixed proportion of the other variable
D:-There is no relation between the variables
Correct Answer:- Option-A
Question29:-Multiple regression is used
A:-To predict scores on an independent variable from scores on multiple dependent variables
B:-To predict scores on an dependent variable from scores on multiple dependent variables
C:-To predict scores on an dependent variable from scores on multiple independent variables
D:-To predict scores on an independent variable from scores on multiple independent variables
Correct Answer:- Option-C
Question30:-Which of the following is not true when conducting multiple regression?
A:-Data must be free from outliers for a multiple regression
B:-Data must be heterogeneous for a multiple regression
C:-Multiple regression can be used to access linear relationships
D:-Data must be normally distributed for multiple regression
Correct Answer:- Option-B
Question31:-As compared to TTL, CMOS logic has
A:-Higher speed of operation
B:-Higher power dissipation
C:-Smaller physical size
D:-All of the above
Correct Answer:- Option-C
Question32:-Pin 21 of 8086 microprocessor is used for the signal
A:-READY
B:-ALE
C:-RESET
D:-QS1
Correct Answer:- Option-C
Question33:-Assume that the following jobs are to be executed on a single processor system

Job identifier CPU-Burst Time
PL 4
P2 1
3 8
P4 1
೧5 2

The jobs are assumed to have arrived at time 0 and in the order P1, P2, P3, P4, P5. Calculate the departure completion time
for job P1 if scheduling is round robin with time slice 1.
A:-4
B:-10
C:-12
D:-11
Correct Answer:- Option-D
Question34:-The Banker's algorithm is used
A:-To prevent deadlock in operating systems
B:-To detect deadlock in operating systems
C:-To avoid deadlock in operating systems
D:-All of the above
Correct Answer:- Option-C
Question35:-The performance of a digital computer improves when its RAM size increases. This is because
A:-Size of virtual memory increases
B:-Number of page faults are less
C:-Larger RAMS are very faster
D:-Number of segment faults are less
Correct Answer:- Option-B
Question36:-Multiplier Quotient register is placed in
A:-Main Memory
B:-CPU